Casting Materials & Alloy Grades

Knights Foundry pours aluminium and a broad range of ferrous casting materials in Wadeville, Gauteng, including high-chromium white iron, Ni-Resist irons, grey and SG irons, carbon and low-alloy steels, austenitic manganese steel, stainless steels including duplex and heat-resistant stainless grades, and specialised nickel-base alloys.

The grades below reflect the material and specification schedule supplied by Knights Foundry. Legacy and cross-standard designations grouped on one line are procurement/search cross-references by material or property family, not a declaration that the standards are technically interchangeable. Parenthetical wrought/common alloy designations are provided as industry cross-references only and do not imply identical chemistry, properties or specification requirements. Final material selection, chemistry, heat treatment, test-bar requirements and acceptance criteria remain controlled by the applicable customer specification.

01 High Chrome 02 Aluminium 03 Ni-Resist SG 04 Ni-Resist Flake 05 Manganese 06 Carbon Steel 07 Wear Steel 08 SG / Ductile 09 Grey Iron 10 High Strength 11 Elevated Temp 12 Wear Alloy 13 Low Temp Steel 14 Stainless & HR 15 Nickel Alloys 16 Enquire

Abrasion-Resistant White Cast Irons

Specification Group

ASTM A532 Abrasion-Resistant Cast Irons

10 grades

ASTM A532 Class III Type A
ASTM A532 Class II Type A
ASTM A532 Class II Type B
ASTM A532 Class II Type C
ASTM A532 Class II Type D
ASTM A532 Class II Type E
ASTM A532 Class I Type A
ASTM A532 Class I Type B
ASTM A532 Class I Type C
ASTM A532 Class I Type D

Specification Group

BS 4844:1986 High-Chromium Abrasion-Resistant Cast Irons

6 grades

BS 4844:1986 Grade 2D
BS 4844:1986 Grade 3A
BS 4844:1986 Grade 3B
BS 4844:1986 Grade 3C
BS 4844:1986 Grade 3D
BS 4844:1986 Grade 3E

Specification Group

High-Chromium Wear Irons by Chromium Content

5 grades

12% chromium white iron (Cr12)
15% chromium white iron (Cr15)
27% chromium white iron (Cr27 / AR27)

ASTM A532 Class III Type A
35% chromium white iron (Cr35)
GX130Cr

DIN high-chromium white iron designation

Specification Group

Ni-Hard Abrasion-Resistant Cast Irons

4 grades

Ni-Hard 1 (Ni-Hard Type 1 / NH1)

ASTM A532 Class I Type A
Ni-Hard 2 (Ni-Hard Type 2)

ASTM A532 Class I Type B
Ni-Hard 3 (Ni-Hard Type 3)

ASTM A532 Class I Type C
Ni-Hard 4 (Ni-Hard Type 4)

ASTM A532 Class I Type D

Aluminium / Aluminum Casting Alloys

Specification Group

BS 1490 LM Series Aluminium Casting Alloys

3 grades

BS 1490 LM4
BS 1490 LM6
BS 1490 LM12

Austenitic Ductile / Spheroidal-Graphite Cast Irons (Ni-Resist)

Specification Group

ASTM A439 Ni-Resist Types

5 grades

ASTM A439 Ni-Resist Type D-2
ASTM A439 Ni-Resist Type D-2B
ASTM A439 Ni-Resist Type D-3
ASTM A439 Ni-Resist Type D-5
ASTM A439 Ni-Resist Type D-5B

Austenitic Grey / Flake-Graphite Cast Irons (Ni-Resist)

Specification Group

ASTM A436 Ni-Resist Types

6 grades

ASTM A436 Ni-Resist Type 1
ASTM A436 Ni-Resist Type 1b
ASTM A436 Ni-Resist Type 2
ASTM A436 Ni-Resist Type 2b
ASTM A436 Ni-Resist Type 3
ASTM A436 Ni-Resist Type 4

Austenitic Manganese Cast Steels

Specification Group

ASTM A128 Hadfield Austenitic Manganese Steel Grades

7 grades

ASTM A128 Grade A
ASTM A128 Grade B-1
ASTM A128 Grade B-2
ASTM A128 Grade B-3
ASTM A128 Grade B-4
ASTM A128 Grade C
ASTM A128 Grade E-2

Specification Group

EN 10293 Austenitic Manganese Cast Steels

1 grade

GX120Mn12

X120Mn12 (Material 1.3401)

ASTM A128 Grade B-3

European Hadfield manganese cast steel

Specification Group

High-Manganese Wear Grades

3 grades

12% manganese austenitic cast steel (Mn12)

ASTM A128 Grade A

standard Hadfield wear grade
18% manganese austenitic cast steel (Mn18)

ASTM A128 Grade E-2

high work-hardening wear grade
28% manganese austenitic cast steel (Mn28)

Carbon and Carbon-Manganese Cast Steels

Specification Group

BS 3100:1991 Carbon / Carbon-Manganese Grades

5 grades

BS 3100:1991 Grade A1

ASTM A27 Grade U-60-30 (415-205)

ASTM A27 Grade 60-30 (415-205)

ASTM A216 Grade WCA
BS 3100:1991 Grade A2

ASTM A27 Grade 70-36 (485-250)

ASTM A27 Grade 70-40 (485-275)

ASTM A216 Grade WCB
BS 3100:1991 Grade A3

ASTM A148 Grade 80-40
BS 3100:1991 Grade A4

ASTM A216 Grade WCC
BS 3100:1991 Grade A5

ASTM A148 Grade 90-60

Specification Group

ASTM A27 / A27M Carbon Steel Castings

7 grades

ASTM A27 Grade 60-30

415-205
ASTM A27 Grade 65-35

450-240

DIN 1681:1985 Grade GS-45
ASTM A27 Grade 70-36

485-250
ASTM A27 Grade 70-40

485-275
ASTM A27 Grade N-1
ASTM A27 Grade N-2
ASTM A27 Grade U-60-30

415-205

Specification Group

ASTM A216 / A216M High-Temperature Carbon Steel Castings

3 grades

ASTM A216 Grade WCA

BS 3100:1991 Grade A1
ASTM A216 Grade WCB

BS 3100:1991 Grade A2
ASTM A216 Grade WCC

BS 3100:1991 Grade A4

Specification Group

ASTM A958 / A958M Carbon Steel Castings

7 grades

ASTM A958 Grade SC1010 Class 70/36
ASTM A958 Grade SC1020 Class 65/35
ASTM A958 Grade SC1020 Class 70/36
ASTM A958 Grade SC1025 Class 65/35
ASTM A958 Grade SC1025 Class 70/36
ASTM A958 Grade SC1030 Class 65/35
ASTM A958 Grade SC1030 Class 70/36

Specification Group

GS-Series and G-Series Cast Steel Designations

6 grades

G20Mn5 (Material 1.6220) cast steel
G40Mn5 (GS-40Mn5) carbon-manganese cast steel
GS-32 carbon cast steel
GS-42 carbon cast steel
GS-45

DIN 1681:1985

ASTM A27 Grade 65-35
GS-60 carbon cast steel

Specification Group

EN 10293 Non-Alloy Cast Steels

1 grade

GE300 (Material 1.0558)

Specification Group

Related Carbon Steel Casting Specifications

1 grade

ASTM A1001

high-strength steel castings in heavy sections

Carbon Cast Steels for Wear and Surface Hardening

Specification Group

BS 3100:1991 Wear / Surface-Hardening Grades

2 grades

BS 3100:1991 Grade AW2
BS 3100:1991 Grade AW3

Ductile / Spheroidal-Graphite Cast Irons

Specification Group

ASTM A536 / SABS 936 Grades

5 grades

ASTM A536 Grade 60-40-18

EN-GJS-400-18

SABS 936-1969 Grade SG38

BS 2789:1985 Grade 400/18
ASTM A536 Grade 65-45-12

EN-GJS-450-10

SABS 936-1969 Grade SG42

BS 2789:1985 Grade 450/10
ASTM A536 Grade 80-55-06

EN-GJS-500-7

SABS 936-1969 Grade SG50

BS 2789:1985 Grade 500/7
ASTM A536 Grade 80-60-03

EN-GJS-600-3

SABS 936-1969 Grade SG60

BS 2789:1985 Grade 600/3
ASTM A536 Grade 100-70-03

EN-GJS-700-2

SABS 936-1969 Grade SG70

BS 2789:1985 Grade 700/2

Specification Group

BS EN 1563 EN-GJS Grades

7 grades

EN-GJS-350 Series

BS 2789:1985 Grade 350/22

EN-GJS-350-22
EN-GJS-400 Series

SABS 936-1969 Grade SG38

ASTM A536 Grade 60-40-18

EN-GJS-400-18

BS 2789:1985 Grade 400/18
EN-GJS-450 Series

SABS 936-1969 Grade SG42

ASTM A536 Grade 65-45-12

EN-GJS-450-10

BS 2789:1985 Grade 450/10
EN-GJS-500-7

SABS 936-1969 Grade SG50

ASTM A536 Grade 80-55-06

BS 2789:1985 Grade 500/7
EN-GJS-600 Series

SABS 936-1969 Grade SG60

ASTM A536 Grade 80-60-03

EN-GJS-600-3

BS 2789:1985 Grade 600/3
EN-GJS-700 Series

SABS 936-1969 Grade SG70

ASTM A536 Grade 100-70-03

EN-GJS-700-2

BS 2789:1985 Grade 700/2
EN-GJS-800 Series

SABS 936-1969 Grade SG80

EN-GJS-800-2

Flake-Graphite Grey Cast Irons

Specification Group

BS 1452:1990 Grades

6 grades

BS 1452:1990 Grade 150

DIN 1691 GG-15 (GG15)

ASTM A48-94a Class 20

ASTM A48M-94e1 Class 150

EN-GJL-150
BS 1452:1990 Grade 180

DIN 1691 GG-20 (GG20)

ASTM A48-94a Class 25

ASTM A48M-94e1 Class 175
BS 1452:1990 Grade 220

DIN 1691 GG-20 (GG20)

ASTM A48-94a Class 30

ASTM A48M-94e1 Class 225

EN-GJL-200
BS 1452:1990 Grade 250

DIN 1691 GG-25 (GG25)

ASTM A48-94a Class 35

ASTM A48M-94e1 Class 250

EN-GJL-250
BS 1452:1990 Grade 300

DIN 1691 GG-30 (GG30)

ASTM A48-94a Class 45

ASTM A48M-94e1 Class 300

EN-GJL-300
BS 1452:1990 Grade 350

DIN 1691 GG-35 (GG35)

ASTM A48-94a Class 50

ASTM A48M-94e1 Class 350

EN-GJL-350

Specification Group

Legacy / Superseded BS 1452:1961 Designations

1 grade

BS 1452:1961 Grade 17 (CI Gr17)

nearest current grade BS 1452:1990 Grade 250

High-Strength Cast Steels

Specification Group

ASTM A148 / A148M High-Strength Steel Castings

2 grades

ASTM A148 Grade 80-40

BS 3100:1991 Grade A3
ASTM A148 Grade 90-60

BS 3100:1991 Grade A5

Specification Group

BS 3100:1991 High-Tensile Grades

3 grades

BS 3100:1991 Grade BT1
BS 3100:1991 Grade BT2
BS 3100:1991 Grade BT3

Specification Group

EN 10293 Quenched and Tempered Alloy Cast Steels

3 grades

G34CrMo4 quenched and tempered cast steel
G35CrNiMo6-6 (Material 1.6579) nickel-chromium-molybdenum cast steel
G42CrMo4 (cast 42CrMo4) quenched and tempered alloy steel

Specification Group

Wrought-Equivalent Chemistries Poured to Order (BS 970 / EN Series)

9 grades

34NiCrMo6 (Material 1.6582) nickel-chromium-molybdenum chemistry
820M17 case-hardening nickel-chromium-molybdenum chemistry
C55 (Material 1.0535) medium-carbon chemistry
EN8 (080M40) medium-carbon chemistry
EN14 (150M19) carbon-manganese chemistry
EN19 (709M40) chromium-molybdenum chemistry
EN22 nickel-chromium-molybdenum chemistry
EN24 (817M40) nickel-chromium-molybdenum chemistry
S690

S690QL1 high-yield quenched and tempered chemistry

Specification Group

Manganese-Vanadium High-Strength Cast Steel

1 grade

MN6V

Manganese-alloy high-strength cast steel

Low-Alloy Cast Steels for Use at Elevated Temperatures

Specification Group

ASTM A217 / A217M Alloy Steel Castings for Pressure-Containing Parts

9 grades

ASTM A217 Grade C5

BS 3100:1991 Grade B5
ASTM A217 Grade C12
ASTM A217 Grade C12A
ASTM A217 Grade WC1

BS 3100:1991 Grade B1
ASTM A217 Grade WC4
ASTM A217 Grade WC5
ASTM A217 Grade WC6

BS 3100:1991 Grade B2
ASTM A217 Grade WC9

BS 3100:1991 Grade B3
ASTM A217 Grade WC11

Specification Group

ASTM A389 / A389M Specially Heat-Treated Alloy Steel Castings for High-Temperature Pressure Parts

2 grades

ASTM A389 Grade C23
ASTM A389 Grade C24

Specification Group

BS 3100:1991 Elevated-Temperature Grades

5 grades

BS 3100:1991 Grade B1

ASTM A217 Grade WC1
BS 3100:1991 Grade B2

ASTM A217 Grade WC6
BS 3100:1991 Grade B3

ASTM A217 Grade WC9
BS 3100:1991 Grade B4
BS 3100:1991 Grade B5

ASTM A217 Grade C5

Wear-Resistant Low-Alloy Cast Steels

Specification Group

L2A / BS 3100:1991 Abrasion-Resistant Grades BW2 and BW3

3 grades

L2A
BS 3100:1991 Grade BW2
BS 3100:1991 Grade BW3

Specification Group

L2B / BS 3100:1991 Abrasion-Resistant Grade BW4

2 grades

L2B
BS 3100:1991 Grade BW4

Specification Group

BS 3100:1991 Grade BW10 — Wear Involving Impact

1 grade

BS 3100:1991 Grade BW10

Specification Group

H500 / AR500-Type Abrasion-Resistant Steel

1 grade

H500

AR500-type wear-resistant chemistry and property family

Cast to customer specification

Low-Temperature Steel Castings

Specification Group

ASTM A352 / A352M Ferritic and Martensitic Steel Castings for Low-Temperature Service

8 grades

ASTM A352 Grade CA6NM
ASTM A352 Grade LC1
ASTM A352 Grade LC2
ASTM A352 Grade LC2-1
ASTM A352 Grade LC3
ASTM A352 Grade LCA
ASTM A352 Grade LCB
ASTM A352 Grade LCC

Specification Group

Related Low-Temperature Specifications

1 grade

ASTM A757

ferritic and martensitic steel castings for low-temperature service

Stainless & Heat-Resistant Stainless Steels

Specification Group

Austenitic Stainless Steels

7 grades

ASTM A743 Grade CF-3 (304L / CF3)
ASTM A743 Grade CF-3M (316L / CF3M)
ASTM A743 Grade CF-8 (304 / CF8)
ASTM A743 Grade CF-8C (347SS / CF8C)
ASTM A743 Grade CF-8M (316 / CF8M)
ASTM A743 Grade CG-3M (317L / CG3M)
ASTM A743 Grade CG-8M (317 / CG8M)

Specification Group

High-Alloy Austenitic Stainless Steels

7 grades

904L (UNS N08904)

wrought/common chemistry reference; cast supply to customer specification
ASTM A743 Grade CF-20 (CF20)
ASTM A743 Grade CK-20 (310SS / CK20)
ASTM A743 Grade CN-3M (CN3M)
ASTM A743 Grade CN-7M (Alloy 20 / A20 / CN7M)
Nitronic 60 (UNS S21800)

galling-resistant chromium-manganese austenitic
UNS N08028 Sanicro 28 (SAN28 / SN28)

Specification Group

Duplex Stainless Steels

8 grades

2304 Duplex (UNS S32304 / SAF 2304)

lean duplex; cast supply to customer specification
ASTM A890 Grade 1A (CD-4MCu / CD4MCu)
ASTM A890/A995 Grade 1B (CD4MCuN)

cast counterpart / nearest cast grade to Ferralium® 255
ASTM A890/A995 Grade 2A (CE8MN)
ASTM A890/A995 Grade 3A (CD6MN / CD6N)
ASTM A890/A995 Grade 4A (CD3MN / 2205 / SAF 2205)
ASTM A890/A995 Grade 5A (CE3MN / 2507 / SAF 2507)
ASTM A890/A995 Grade 6A (CD3MWCuN / Zeron® 100)

Specification Group

Ferritic Stainless Steels

1 grade

ASTM A743 Grade CB-30 (CB30)

Specification Group

Martensitic Stainless Steels

7 grades

440C (UNS S44004)

high-carbon martensitic chromium stainless steel
ASTM A743 Grade CA-6NM (CA6NM)

BS 3100:1991 Grade 425C12
ASTM A743 Grade CA-15 (CA15)

BS 3100:1991 Grade 410C21
ASTM A743 Grade CA-15M (CA15M)
ASTM A743 Grade CA-40 (CA40 / 420SS)

BS 3100:1991 Grade 420C29
X39Cr13 (Material 1.4031) martensitic chromium stainless
X39Cr14

XCr14 martensitic chromium stainless

Specification Group

Precipitation Hardening Stainless Steels

2 grades

ASTM A747 Grade CB7Cu-1

cast counterpart to 17-4 PH
ASTM A747 Grade CB7Cu-2

Specification Group

Heat-Resistant Stainless Steels

13 grades

Grade HR1

BS 3100:1991 Grade 309C35

SABS 1465 Grade HRS1

ASTM A297 Grade HH

DIN 1.4837
Grade HR2

BS 3100:1991 Grade 310C45

SABS 1465 Grade HRS9

ASTM A297 Grade HK

DIN 1.4846
Grade HR3

BS 3100:1991 Grade 309C40

SABS 1465 Grade HRS5

ASTM A297 Grade HE
Grade HR5

SABS 1465 Grade HRS4

ASTM A297 Grade HC

DIN 1.4823
Grade HR6

SABS 1465 Grade HRS4

ASTM A297 Grade HC

DIN 1.4823
Grade HR7

BS 3100:1991 Grade 452C12

SABS 1465 Grade HRS3

DIN 1.4777
Grade HR8

BS 3100:1991 Grade 330C12

SABS 1465 Grade HRS12

ASTM A297 Grade HT

DIN 1.4864
Grade HR9

BS 3100:1991 Grade 452C11

SABS 1465 Grade HRS2

DIN 1.4777
Grade HR10

BS 3100:1991 Grade 452C11

SABS 1465 Grade HRS2

ASTM A297 Grade HC

DIN 1.4776
Grade HR17

BS 3100:1991 Grade 331C40

SABS 1465 Grade HRS13

ASTM A297 Grade HU

DIN 1.4865
Grade HR30

SABS 1465 Grade HRS10

ASTM A297 Grade HL
Grade HR50

DIN 2.4879
UMCO50

DIN 2.4778

Nickel-Base Alloys

Specification Group

Nickel-Base Alloy Grades

7 grades

ASTM A494 Grade CW-5MC

nickel-chromium-molybdenum cast alloy
ASTM A494 Grade CW-6MC

UNS N26625

cast alloy; comparable wrought/common alloy: Alloy 625 / UNS N06625
ASTM A494 Grade CW-6MW

nickel-chromium-molybdenum-tungsten cast alloy
ASTM A494 Grade CW-6M

Ni-Cr-Mo cast alloy; historically associated with Chlorimet 3 / modified Hastelloy C family
ASTM A494 Grade CW-12MW

UNS N30002

cast alloy; comparable wrought/common alloy: Hastelloy C-276 (Hast C) / UNS N10276
ASTM A494 Grade CY-40

Ni-Cr-Fe cast alloy; comparable wrought/common alloy: Inconel 600
Inconel 657

high-temperature nickel-chromium cast alloy; supply to customer casting specification

Material Enquiries & Unlisted Grades

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